It depends what you're looking for in a course. The courses at London Metropolitan University and Brunel differ greatly. I'm currently on the course at London Met, studying Aviation Management & Operations which incorporates the ATPL GS Theory in the 2nd year.
But just a quick summary, the 'aviation' related courses at universities in and around London are at the following universities: City, Bucks, Kingston, London Met, Hertfordshire & Brunel. You're best off looking on the UCAS website under any aviation related keywords...'aviation, avionics, aeronautical,pilot'